结果表明，存在着驱动电流的密度窗口，即仅在一定的等离子体密度范围内才能驱动电流(通常在理论和实验上仅注意到驱动电流的密度上限)。
The results show that there exists a density window for lower hybrid wave current drive (LHCD), i. e, LHCD would be achieved only within a certain range of plasma density.
为保证绝缘子获得较高致密度而不变形，应尽量提高生坯密度，同时排蜡温度应低于该种玻璃的转变温度上限。
To insure more densification but deformation of glass beads, the green density should be increased, and the burnout temperature of binder should be below the toplimit of transformation temperature.
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